Cold Gas Deposition Process is an intriguing technique that allows the deposition of metallic powders on several different substrates. The deposition process is ruled by different factors, among these the superficial roughness and texturing of the substrate plays an important role. The aim of this paper is to study the influence of different superficial texturing on the deposition process of aluminum powders on a AA 2024 plate. Samples with different superficial texturing were produced by means of a fiber laser by varying the parameters of the laser treatment. The deposition process was carried out on all the samples under the same spraying condition. After the deposition process the cross section of the interface between the substrate and the coating and the microstructure of the coating itself were observed to study the influence of the superficial texturing on the coating formation. It has been found that the superficial texturing influences both the adhesion of the coating and the microstructure, in terms of splat formation, of the coating itself.
Astarita, A., Genna, S., Leone, C., Liberini, M., Squillace, A. (2016). On the influence of different superficial laser texturing on the deposition of powders through cold spray process. In XXX International Conference on Surface Modification Technologies (SMT 30). Milano.
On the influence of different superficial laser texturing on the deposition of powders through cold spray process
GENNA, SILVIO;
2016-01-01
Abstract
Cold Gas Deposition Process is an intriguing technique that allows the deposition of metallic powders on several different substrates. The deposition process is ruled by different factors, among these the superficial roughness and texturing of the substrate plays an important role. The aim of this paper is to study the influence of different superficial texturing on the deposition process of aluminum powders on a AA 2024 plate. Samples with different superficial texturing were produced by means of a fiber laser by varying the parameters of the laser treatment. The deposition process was carried out on all the samples under the same spraying condition. After the deposition process the cross section of the interface between the substrate and the coating and the microstructure of the coating itself were observed to study the influence of the superficial texturing on the coating formation. It has been found that the superficial texturing influences both the adhesion of the coating and the microstructure, in terms of splat formation, of the coating itself.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
